Which relation is created with the primary key associated with the relationship or associative entity, plus any non-key attributes of the relationship or associative entity and the primary keys of the related entities (as foreign key attributes)?
A) Associative entity
B) Associative entity with its own key
C) Associative entity with additional key
D) Binary 1:N relationship
Question 2
The ________ rule specifies that an entity instance of the super type does not have to belong to any subtype.
A) Total specialization
B) Partial specialization
C) Overlap
D) Disjoint
Red algae and primary plastid of the supergroup Archaeplastida.
Jets Created by a Black Hole in a Binary System
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The relationship of substrate con- version (as measured by optical density) to the amount of patient ...
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The relationship between maternal age and the frequency of trisomy 21 (Down syndrome). The risk incr